Piston-packing



(No Model.)

W. 'HESTON.

. PISTON PAGKING.

No. 308,158. Patented Nov. 18,1884.

, I I. F

WITNESSES: INVENTOR.

ATTORNEYS.

STATES PATENT ()FFICE.

WILLIAM HESTON, OF MOUNT UNION, ASSIGNOR OF ONE-HALF TO ROYAL E. COLLAR AND PERRY W. WELKER, OF ALLIANCE, OHIO.

PISTON-PACKING.

EEPECIPICATION forming part of Letters Patent No. 308,158, dated November 18, 1884-.

Application filed February 11, 1884. (No model.)

To all whom it may concern;

Be it known that I, WILLIAM HEs'roN, a citizen of the United States, and a resident of Mount Union, in the county of Stark and State of Ohio, have invented certain new and useful Improvements in Piston-Packing; and I do hereby declare that the following is a full, clear, and exact description of the invention, which will enable others skilled in the art to which it appertains to make and use the same, reference being had to the accompanying drawings; which form a part of this specification, and in which- Figure 1 is a perspective view of my improved packing; and Fig. 2 is asectional view of a stuffing-box, showing the packing in position.

Similar letters of reference indicate corresponding parts in both the figures.

My invention has relation to packing especially adapted for use in the stuffing-boxes in steam and other engines; and it consists in the elastic corrugated packing-cup, of rubber or similar material, which will be hereinafter more fully described and claimed.

In the accompanying drawings, A denotes the stuffing-box, and B the piston. O is the packing, which is in the nature of a cylindrical cup, as shown in Fig. 1, with a circular hole, D, in the bottom adapted to fit around the piston. The inside of this cup forms an inverted cone,with ribbed or corrugated sides, as shown at E, the thickness of the corrugated rubber wall decreasing in thickness from the central aperture, D, toward the upper edge. Theexterior of the cup may be protected by a lining or casing, F, of duck, canvas, or similar material.

In using this packing the cylindrical cup is placed in the stuffing-box, as shown in Fig. 2, 40 and the space between its corrugated inside and the piston is packed with loose hemp. (Shown at H.) This hemp should be loosened I and dampened and packed into the cup snugly and tightly all around the piston, and 5 if it should be found to leak at any time more hemp may be added, and thus effectually prevent leakage without the necessity of screwing up the gland. The horizontal corrugations E on the inside of the cu will prevent the hemp from working out o the same by the reciprocations of the piston, thereby at all times holding the inside hemp packing firmly in its proper position.

Having thus described my invention, I claim and desire to secure by Letters Patent of the United States- I As an improved article of manufacture,the elastic piston-packing herein shown and described, consisting of acylindrical cup of rubber or other suitable material having a central perforation in the bottom, and forming an inside conical chamber having ribbed or corrugated sides and adapted to receive textile packing, substantially as and for the purpose set forth.

In testimony that I claim the foregoing as my own I have hereunto affixed my signature in presence of two witnesses.

WILLIAM HESTON.

Witnesses:

H. LAUGHLIN, S. V. EssIcK. 

